The suggestion to cut the bottom HDD cage is about all I could think of too. Not many options because the holes for the standoffs mean you need to cut the whole case and move it around. If you mount the PSU in the front where a HDD cage would be, you could still mount HDs above the PSU in the 5 1/4 bays with some 3 1/2 converters or some other modding. I have seen some mods with the PSU in the front, if I remember where I will link the pics or what have you.